online_discharge_orifice_meter:  Discharge using an orifice meter An orifice meter Online head loss using orifice meter ν = f(T) ReDo/K = (2g Δh)1/2 (d/ν) K = f(ReDo/K , Do/D1) Ao = (π/4) Do2 Q = K Ao (2gh)1/2 [SI units: h in m; D in m; T in °C; Q in m3/s] [U.S. units: h in ft; D in ft; T in °F; Q in cfs] INPUT DATA: Select:   SI units (metric) U.S. Customary units Head loss hρ2 :         Warning: Undefined variable $headlossunits in /var/www/html/ponce/onlinedischargeorificemeter.php on line 641 Pipe diameter D1 :         Warning: Undefined variable $diameter1units in /var/www/html/ponce/onlinedischargeorificemeter.php on line 649 Orifice diameter Do :         Warning: Undefined variable $diameter0units in /var/www/html/ponce/onlinedischargeorificemeter.php on line 657 Temperature T :         Warning: Undefined variable $temperatureunits in /var/www/html/ponce/onlinedischargeorificemeter.php on line 664 Ratio ρ2 /ρ1 :         [Leave blank to set mercury manometer as default ρ2 /ρ1 = 13.6] OUTPUT: Q =  Warning: Undefined variable $discharge in /var/www/html/ponce/onlinedischargeorificemeter.php on line 686 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinedischargeorificemeter.php on line 686 0   Warning: Undefined variable $dischargeunits in /var/www/html/ponce/onlinedischargeorificemeter.php on line 686 • Orifice on Wikipedia   Your request was processed at  10:48:22 pm on April 3rd, 2025   [ 250403  22:48:22 ]. Thank you for running online_discharge_orifice_meter.   [160720]